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Finding the Fourth Proportional to 437,647.20, 656,470.80 and 260,062.80

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Solution

The fourth proportional to 437,647.20, 656,470.80 and 260,062.80 is: 390,094.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,647.20 : 656,470.80 = 260,062.80 : x
  2. Step 2: Convert to fraction form
    437,647.20/656,470.80 = 260,062.80/x
  3. Step 3: Cross multiply
    437,647.20x = 656,470.80 × 260,062.80
  4. Step 4: Simplify right side
    437,647.20x = 170,723,634,366.24
  5. Step 5: Solve for x
    x = 170,723,634,366.24/437,647.20
  6. Step 6: Final answer
    x = 390,094.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.